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High-strength brazed joints of titanium alloys
https://doi.org/10.22349/1994-6716-2025-120-1-164-172
Abstract
The structure and properties of diffusion brazed titanium alloys joints of the various titanium alloys (PT-3V, VT6, VT6S, VT20 and VT22) are investigated. The optimal technological parameters to produce the joints of the equal to the base metals strength are proposed. The effect of plasticization of the two-phase titanium alloys (VT6S) after high temperature annealing near the polymorphous transformation temperature (during brazing) is shown. An improved method for brazing high-alloyed titanium alloys is considered using the example of (α+β)-titanium alloy of the transition class VT22. Brazing was carried out through a titanium interlayer using an amorphous tape filler, providing a joint strength of 1000 MPa.
Keywords
titanium alloys,
diffusion brazing,
PT-3V,
VT6,
VT6S,
VT20,
VT22,
amorphous filler metals,
high strength,
properties,
structure,
brazing gap,
base metal,
titanium interlayer
Supporting agencies: Experimental studies were performed on the equipment of the Center for Collective Use “Composition, Structure and Properties of Structural and Functional Materials” of the NRC “Kurchatov Institute” – CRISM “Prometey”.
About the Authors
A. I. Igolkin
Scientific and Technical Services Center “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng),
2N-29 A, Bakunin Ave, 191144 St Petersburg
N. V. Lebedeva
NRC “Kurchatov Institute”– CRISM “Prometey”
Russian Federation
Russian Federation
Cand Sc. (Eng),
49 Shpalernaya St, 191015 St Petersburg
I. A. Maksimenko
JSC NPF “NevInterMash”
Russian Federation
Russian Federation
11E Dobrolyubova Ave, 197198 St Petersburg
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Review
For citations:
Igolkin A.I., Lebedeva N.V., Maksimenko I.A. High-strength brazed joints of titanium alloys. Voprosy Materialovedeniya. 2025;(1(121)):164-172. (In Russ.) https://doi.org/10.22349/1994-6716-2025-120-1-164-172
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